linux-kernel - Re: [PATCH v2] nand: brcmnand: fix OOB R/W with Hamming ECC

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Message-Id: <20210302163212.23060-1-miquel.raynal@bootlin.com>
Date:   Tue,  2 Mar 2021 17:32:12 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Álvaro Fernández Rojas <noltari@...il.com>,
        f.fainelli@...il.com, Brian Norris <computersforpeace@...il.com>,
        Kamal Dasu <kdasu.kdev@...il.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd@...ts.infradead.org,
        bcm-kernel-feedback-list@...adcom.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] nand: brcmnand: fix OOB R/W with Hamming ECC

On Wed, 2021-02-24 at 08:02:10 UTC, =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= wrote:
> Hamming ECC doesn't cover the OOB data, so reading or writing OOB shall
> always be done without ECC enabled.
> This is a problem when adding JFFS2 cleanmarkers to erased blocks. If JFFS2
> clenmarkers are added to the OOB with ECC enabled, OOB bytes will be changed
> from ff ff ff to 00 00 00, reporting incorrect ECC errors.
> 
> Fixes: 27c5b17cd1b1 ("mtd: nand: add NAND driver "library" for Broadcom STB NAND controller")
> Signed-off-by: Álvaro Fernández Rojas <noltari@...il.com>
> Acked-by: Brian Norris <computersforpeace@...il.com>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks.

Miquel